high7.5
CVE-2021-46320
Improper Initialization in OpenZeppelin
Impact
In OpenZeppelin <=v4.4.0, initializer functions that are invoked separate from contract creation (the most prominent example being minimal proxies) may be reentered if they make an untrusted non-view external call. Once an initializer has finished running it can never be re-executed. However, an exception put in place to support multiple inheritance made reentrancy possible, breaking the expectation that there is a single execution.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @openzeppelin/contracts | < 4.4.1 | 4.4.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openzeppelin | Openzeppelin | from 3.2.0 through 4.4.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-9c22-pwxw-p6hx
- https://github.com/advisories/GHSA-88g8-f5mf-f5rj
- https://nvd.nist.gov/vuln/detail/CVE-2021-46320
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3006
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.4.1